"The third group of spirits in the Munda pantheon are the Ora Bongako or the House-spirits. These are the spirits of the deceased ancestors of each family. They are worshipped in the house-sanctuary called Ading, by the head of every family. Sometimes they are referred to as Haparomko (the ancestral spirits). Ancestor worship finds an important place in the religious belief of the Mundas. They believe that after the death of a person his spirit/shade (roa/umbul) has no house to live in. As an outcast it roams about in the neighborhood of the grave. After an odd number of days, the Umbul-ader (homebringing of the shade) ceremony is performed by which the 'shade' of the deceased is brought into the ading of the house and enshrined there. Henceforth the man's spirit is called no longer umbul but Ora Bonga (House Spirit). This important ceremony is a way of re-introducing the deceased member into the tribe. It is believed that they in turn are the real benefactors of the family or the tribe to which they belong."
January 1, 1970
https://en.wikiquote.org/wiki/Munda_people